CN2461981Y

CN2461981Y - Sewage check valve

Info

Publication number: CN2461981Y
Application number: CN 00242978
Authority: CN
Inventors: 许乃红
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-11
Filing date: 2000-07-11
Publication date: 2001-11-28
Anticipated expiration: 2010-07-11

Abstract

The utility model relates to a check valve which is used in a drainage system of a resident building to prevent sewerage from flowing backwards. A check valve outer shell 1, an O-shaped sealing ring 2, a circular floating ball 3 and a support plate of the floating ball 4 form a whole body, wherein, one end of which is connected with a drainage main pipe and the other end of which is connected with a basin for washing vegetables in a kitchen, a toilet bowl in a toilet and a floor drain. When the drainage system encounters a fault, sewerage can not be discharged, the sewerage is firstly accumulated at the lowest place in a toilet and a kitchen of the bottommost floor (a basement or the first floor) of a building, when the sewerage almost overflows, the circular floating ball used for seal floats following a water surface to be above the water surface, and the circular floating ball and the O-shaped sealing ring are firstly closed, which forms a whole body (that is to say, the valve is automatically closed) and prevents the sewerage from flowing out. When the drainage system is dredged, the circular floating ball used for seal and the O-shaped sealing ring automatically disengage, the sewage check valve of the utility model can be automatically opened, the drainage system returns to normal, and the utility model can prevent sewerage from flowing backwards.

Description

Wastewater stopping valve

The utility model relates to a kind of residential building drainage system, prevents the flap valve that sewage flows backwards.

At present, known wastewater stopping valve has two kinds: a kind of valve by filter foreign material sieve plate, ball valve guide rod, unidirectional unlatching etc. is formed flap valve; Owing in the sewage that lavatory pan is discharged ight soil is arranged, filter foreign material sieve plate stops up easily, makes smooth automatic obstruction of pipeline flowing water on the contrary, and effluent stream is not gone out.Another kind is the flap valve of unidirectional unlatching Movable valve; When blow-off line stopped up, the foreign material that float on the surface (ight soil) at first were added between valve and the valve body, and valve can not be closed sternly, did not have the effect of non-return; If the Movable valve of unidirectional unlatching is manual? because the blow-off line obstruction is not free rule, when nobody was on the scene, uncontrollable sewage flow backwards, and is when sewage quantity is big, even find, also late.

The purpose of this utility model provides a kind of wastewater stopping valve, when sewage row does not go out, prevents that automatically sewage from flowing backwards.

The purpose of this utility model is achieved in that washing nappy, washroom lavatory pan and floor drain outfall place in the residential building kitchen installs flap valve (being made up of flap valve shell, O shape closed-loop, circle ball float, ball float collet), and system is connected with building water drain.When sewage row does not go out, sewage at first gathers lavatory, the kitchen lowest part of the bottom (basement or one deck), when sewage will overflow, sealing is subjected to buoyancy of water with the circle ball float and at first floats, with O shape closed-loop at first close and, form an integral body (being that valve is closed automatically), stop sewage to flow backwards.After bottom drainage system sewage was long-pending full, the sewage that flows down from above was cumulative, up continuity so in layer, and wastewater stopping valve is in layer closed, and does not go out up to the sewage row of the top layer of building.After the sewage in certain layer the drainage system amasss completely, resident family finds that sewage row does not go out, be that sewer stops up, stop water immediately, the mediation of notice infrastructure management company, after the drainage system mediation, closed circular ball float and O shape closed-loop (because terrestrial gravitation etc.) can break away from automatically, wastewater stopping valve is opened automatically, and it is normal that drainage system recovers.

Owing to adopt such scheme, after sewer stopped up, wastewater stopping valve was closed automatically, prevented that sewage from flowing backwards.Valuable time is provided for infrastructure management company's dredging sewer, in order to avoid the room is soaked by sewage.

Be in conjunction with the accompanying drawings and embodiments the utility model to be further specified below.

Fig. 1 is to use and washes nappy outfall place in the residential building kitchen.

Fig. 2 is to use at residential building washroom lavatory pan, floor drain outfall place.

Fig. 3 is the wastewater stopping valve organigram.The 1st, flap valve shell, the 2nd, O shape closed-loop, the 3rd, closed circular ball float, the 4th, ball float collet.

Fig. 4 is the 1-1 sectional drawing of Fig. 3: the 1st, and flap valve shell, the 2nd, O shape closed-loop, the 3rd, closed circular ball float, the 4th, ball float collet.

Fig. 5 is a flap valve part drawing: the 2nd, and 5. O shape closed-loop drawing is 2 sectional drawing, the 3rd, the closed circular ball float.The 4th, ball float collet (a elevation, b plan view).Wastewater stopping valve B in Fig. 1, an end is connected with main drain A, and the other end is washed the nappy outfall with the kitchen and is connected, and C is a flooring.

Sewage non-return B in Fig. 2, an end is connected with main drain A, and the other end is connected with washroom lavatory pan, floor drain outfall, and C is a flooring.

O shape closed-loop (2), ball float collet (4) are connected with flap valve shell (1) in Fig. 4, and the closed circular ball float is placed in the flap valve shell.When sewage flow backwards in flap valve from main drain, the buoyancy that the closed circular ball float is subjected to sewage upwards floated, at first with O shape closed-loop closure, sewage is many more in the main, the suffered buoyancy of ball float is big more, and closed circular ball float and O shape closed-loop closure are tight more, thereby reaches the effect of non-return.

Claims

1. wastewater stopping valve, an end is connected with main drain, and the other end and kitchen are washed nappy, washroom lavatory pan and floor drain and are connected and it is characterized in that: an integral body of being made up of flap valve shell 1, O shape closed-loop 2, circle ball float 3, ball float collet 4.